byUnited States Bureau of Land Management. Great Falls Resource Area; United States Bureau of Land Management. Lewistown District Office; United States Forest Service; Montana Dept. of Fish, Wildlife, and Parks
"BLM-MT-ES-90-003-4111"--P.  of cover.Cooperating agencies: U. S. Bureau of Land Management, U. S. Forest Service, and the State of Montana Topics: Land use, Oil well drilling, Gas well drilling, Nature conservation, Petroleum industry and trade,...